Product Description:

The CSB02.5B-ET-EC-NN-L3-NN-NN-FW is a drive controller produced by Bosch Rexroth Indramat and placed within the CSB Drive Controllers series. It is intended to regulate servo and spindle axes, providing motion commands, fieldbus communication, and sensor processing in automated machinery. This arrangement places axis control, network exchange, and feedback handling on one controller so the machine can coordinate motion and status signals through a single control platform. Network wiring connects through an 8-pin RJ-45 connector for Fast Ethernet traffic, while the ET option supports Sercos III, EtherCAT, EtherNet/IP, and PROFINET IO telegrams.

This controller supplies 11 digital inputs, and the logic-high threshold is set at 15 V so standard industrial sensors can be connected directly. Command results can be issued through transistor stages that support up to 500 mA of digital output current, and two analog channels provide ±10 V reference or feedback signals through 2 analog outputs. A form-C relay on the baseboard can switch external loads up to 30 V for interlock or contactor control. The embedded ET option draws 2.7 W, the EC diagnostics card uses 1.1 W and produces square-wave encoder feedback, and the L3 safety module consumes 1.0 W for drive-integrated STO logic. That combination of digital, analog, relay, network, and safety functions allows the controller to exchange machine signals without requiring separate interface boards for basic control tasks.

Encoder services are supported over cable runs as long as 75 m, and the supply available to those transducers peaks at 6 W with 5 V rails limited to 500 mA per channel. The EC board can process incremental signals up to 1000 kHz, maintaining accurate position capture even with high-speed motors. All Ethernet frames are transmitted on a 100Base-TX physical layer, so Cat-5e cabling is adequate for deterministic communication across the control network. Longer encoder reach and high pulse-processing capability help the controller maintain stable feedback handling when transducers are mounted away from the cabinet or when motor speed raises signal frequency. The dedicated power budgets for the ET, EC, and L3 modules keep control, feedback, and safety circuits isolated from axis power during simultaneous motion, feedback acquisition, and network traffic.